Spam I Am: carrier spam label check
REMOTE · ISMYNUMBERSPAM.COM
See if a phone number shows Spam Risk or Scam Likely on AT&T, Verizon and T-Mobile real phones.
Available components
Last scanned (20 hours ago)
Scores higher than 58% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Communication
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security74
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Nothing on it is marked destructive, but we can't show that an anonymous caller can only read: full credit needs the server to list at least one tool and every tool to be verifiably read-only. We use a best-effort check of tool names and descriptions to tell read-only tools from tools that change things, so some genuinely read-only tools may not get full credit. Names that start with a read verb (get, list, read, search and similar) and accurate readOnlyHint annotations help. Meet that to earn full credit, or require authorisation. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability64
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 850 tokens (~141/item across 6 items; 6 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management40
- Stability observed for 12 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage92
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 76% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
Checks we ran (13)
- TLS certificate
- Authorization
- HTTPS
- HSTS header
- DNSSEC
- Transport
- Schema quality
- Stability
- Tool coverage
- Injection markers
- Destructive annotations
- Judged manipulation
- MCP protocol
Does not apply to this hosted endpoint (2)
- Supply Chain SecurityScored on package channels only. This is a hosted endpoint, so there is nothing to install or inspect.
- Provenance & TransparencyScored on package channels only. This is a hosted endpoint, so there is nothing to install or inspect.
The score does not measure everything. What the score does not measure →
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 3 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.
- 1 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.
- 30 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.
- 28 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
- 26 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 25 Oct 26 0
- Stability: unverified → 0.03 ▲ functional
- 24 Oct 26 67
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Probed https://ismynumberspam.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=ismynumberspam.com | CN=YE1,O=Let's Encrypt,C=US | 22 Oct 2026 | 20 Jan 2027 | ECDSA 256 | ECDSA-SHA384 | 6502de1f41cb00c6b540af80acc81f2f941 |
| SANs: ismynumberspam.com | ||||||
| CN=YE1,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 5ddd70dd31f801c85c186a7a04b80afe |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of ismynumberspam.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | Trust anchor | 20326, 38696 | 8, 8 | Verified |
| com. | DS published | 19718 | 13 | Verified |
| ismynumberspam.com. | No DS | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | same-origin |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://ismynumberspam.com/mcp | Verified | 200 | |
| http (plaintext) | http://ismynumberspam.com/mcp | HTTPS enforced | 308 | https://ismynumberspam.com/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
get_approval Check whether your human approved ~119
Status of an approval request: pending, approved, declined or expired. Once approved, a keyless request returns api_key (shown once): pass it as api_key to the other tools. Set wait_seconds (up to 25) to wait for a decision.
| Name | Type | Req | Description |
|---|---|---|---|
| api_key | string | – | Optional API key (sia_...), if your connection has none and you got one from get_approval |
| approval_id | string | yes | – |
| token | string | – | The token from request_approval |
| wait_seconds | integer | – | – |
No output schema declared.
No examples provided.
get_balance Balance ~53
Needs a key. The account balance, holds, and this key's spending limit.
| Name | Type | Req | Description |
|---|---|---|---|
| api_key | string | – | Optional API key (sia_...), if your connection has none and you got one from get_approval |
No output schema declared.
No examples provided.
get_check Get a check's results ~121
The check and each carrier's result: status waiting, complete or incomplete; the label shown and caller name; flagged true/false; a screenshot link. Set wait_seconds (up to 25) to wait for results to arrive before answering.
| Name | Type | Req | Description |
|---|---|---|---|
| api_key | string | – | Optional API key (sia_...), if your connection has none and you got one from get_approval |
| check_id | string | yes | – |
| token | string | – | The token from start_check, for a check started without a key |
| wait_seconds | integer | – | – |
No output schema declared.
No examples provided.
get_coverage Carriers and prices ~24
Which carriers are online now, prices in cents, and the dialing window.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
request_approval Ask your human to approve spending ~170
Get a link (approve_url) for your human to open: they sign in, add funds if needed, set a spending limit and approve. Show them the link, then call get_approval. Use this when a check is refused with free_check_used, insufficient_funds or key_limit.
| Name | Type | Req | Description |
|---|---|---|---|
| amount_cents | integer | – | How much you're asking for |
| api_key | string | – | Optional API key (sia_...), if your connection has none and you got one from get_approval |
| number | string | – | US 10-digit phone number, any format, e.g. '2145550100' or '(214) 555-0100' |
| reason | string | – | Shown to your human, e.g. 'Check our sales line before Monday's campaign' |
No output schema declared.
No examples provided.
start_check Start a spam label check ~182
Start a check of what AT&T, Verizon and T-Mobile phones show when a number calls. Returns the test line to call ('dial') for each carrier and a check id (and a token for a keyless check: keep it). The number being checked must then call each test line within the window. The first check on a number is free; later ones need a key with funds.
| Name | Type | Req | Description |
|---|---|---|---|
| api_key | string | – | Optional API key (sia_...), if your connection has none and you got one from get_approval |
| carriers | array | – | Leave out to check every carrier that's online |
| number | string | yes | US 10-digit phone number, any format, e.g. '2145550100' or '(214) 555-0100' |
| webhook_url | string | – | Optional https address to POST the finished result to |
No output schema declared.
No examples provided.
How do I install the Spam I Am: carrier spam label check MCP server?
Spam I Am: carrier spam label check is a hosted endpoint at https://ismynumberspam.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · ismynumberspam.com
claude mcp add --transport http com-ismynumberspam-spam-i-am 'https://ismynumberspam.com/mcp'
What is the Spam I Am: carrier spam label check MCP server?
Spam I Am: carrier spam label check is an MCP server listed in the public MCP registry as com.ismynumberspam/spam-i-am. See if a phone number shows Spam Risk or Scam Likely on AT&T, Verizon and T-Mobile real phones. This page covers its hosted endpoint (https://ismynumberspam.com/mcp).
Is the Spam I Am: carrier spam label check MCP server safe to use?
Spam I Am: carrier spam label check scores 72 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Spam I Am: carrier spam label check MCP server expose?
Spam I Am: carrier spam label check exposes 6 tools: start_check, get_check, get_coverage, get_balance, request_approval, get_approval. Their descriptions and schemas cost roughly 669 tokens of context every time the server is loaded.
Does the Spam I Am: carrier spam label check MCP server require authentication?
No. We connected to Spam I Am: carrier spam label check without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Spam I Am: carrier spam label check MCP server still maintained?
Spam I Am: carrier spam label check is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What did VerifyMCP test on the Spam I Am: carrier spam label check MCP server?
VerifyMCP ran 13 checks on Spam I Am: carrier spam label check, covering TLS certificate, Authorization, HTTPS, HSTS header and 9 more. Supply Chain Security and Provenance & Transparency do not apply to a hosted endpoint, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.